AudioStream reviews the Ayre QB-9 DSD DAC

“Compared to the older QB-9, everything comes into clearer and more distinct focus while also sounding more fully formed. In a word the QB-9 DSD sounds more natural. I would say that the QB-9 DSD also sounds richer in comparison as if the music is more fleshed out. By comparison, the older QB-9 sounds a tad flatter and aggressive at times whereas the QB-9 DSD has smoothed things out and filled them in. These differences are not subtle to my ears and I easily preferred the QB-9 DSD to the older QB-9 in every respect.”